Android - Hide button during an onClick action

Question

I need to hide a button during an onClick action like this:

    public void onClick(View view) {
    switch (view.getId()){
        case R.id.button1:

            Button button2 = (Button) findViewById(R.id.button2);
            button2.setVisibility(View.GONE);

            //Some methods
            //...

            button2.setVisibility(View.VISIBLE);

            break;
    }

But the visibility changes only after the onClick, what could I do to hide the button during the onClick?

Thanks

If you want to hide a button/view while user click on another view then you have to implement `onTouchListener` instead of `onClickListener` — Md Sufi Khan, Jul 29 '16 at 21:43
I want to hide the button while "some methods" are executed. — Villat, Jul 29 '16 at 21:46

score 3 · Accepted Answer · answered Jul 29 '16 at 21:53

of course because you are executing all operation in the same thread you may notice the visibility changement, try this :

public void onClick(View view) {
switch (view.getId()){
    case R.id.button1:

        final button2 = (Button) findViewById(R.id.button2);
        button2.setVisibility(View.GONE);

        setVisibility(GONE);
        new Thread(new Runnable() {
            @Override
            public void run() {
                //your work

                runOnUiThread(new Runnable() { //resetting the visibility of the button
                    @Override
                    public void run() {
                        //manipulating UI components from outside of the UI Thread require a call to runOnUiThread
                        button2.setVisibility(VISIBLE);
                    }
                });
            }
        }).start();

        break;
}
}

That works! Another question, there are 3 thread in total, one for set the visibility to GONE, other to do my work, and the last for set the visibility back again. Is it possible to do the same in 2 threads? — Villat, Jul 29 '16 at 22:54
in reality there is just 2 thread, the UI Thread and the second thread for your work, `runOnUiThread` doesn't create a new thread but just post the code inside its `run` method to the UI Thread. from the doc about `runOnUiThread` method : _Runs the specified action on the UI thread. If the current thread is the UI thread, then the action is executed immediately. If the current thread is not the UI thread, the action is posted to the event queue of the UI thread._ — younes zeboudj, Jul 30 '16 at 08:21

score 0 · Answer 2 · answered Jul 29 '16 at 21:50

You may try like below:

@Override
public boolean onTouch(View v, MotionEvent event) {
    switch(v.getId()){
    case R.id.button1: {
        if(event.getAction() == MotionEvent.ACTION_DOWN){

            Button button2 = (Button) findViewById(R.id.button2);
            button2.setVisibility(View.GONE);

            return true;
        } else if(event.getAction() == MotionEvent.ACTION_UP) {

            // some methods

            Button button2 = (Button) findViewById(R.id.button2);
            button2.setVisibility(View.VISIBLE);

            return true;
        }
    return false;
    }
}

Android - Hide button during an onClick action

2 Answers2

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